ROEMHELD Standard Swing Clamps – All Threaded, B1.881 (3, 5, 6, 7 Series)

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ROEMHELD Standard Swing Clamps – All Threaded, B1.881 (3, 5, 6, 7 Series)

3000 to 7250 psi max

Single and Double Acting

Swing Clamps utilize a sturdy helical-cam mechanism to swing the clamping arm clear for unrestricted loading. The Standard Swing Clamps shown here accept a wide variety of clamping arms, with maximum allowable operating pressure depending on the type of arm selected (3000 to 7250 psi max). These Swing Clamps incorporate our unique safety-clutch mechanism. If the clamping arm strikes an unexpected object during its swing, the clutch disengages to avoid damaging the object or the clamp's helical-cam mechanism. Clamping arm can be mounted to start its 90° swing from any position within 360°. The all-threaded version shown here is ideal for mounting through a fixture plate, to keep fluid lines out of the working area.

Available in four clamp sizes, single or double acting, with a choice of clockwise, counterclockwise, or zero° swing. Available with 45° and 60° swing angles by special order. Double-acting clamps are also available with longer clamping strokes (25mm or 50mm) by special order. Clamping force at 7250 psi for single-acting clamps with a pivoting clamping arm:

1060 Lbs (3 series)

2700 Lbs (5 series)

4200 Lbs (6 series)

7300 Lbs (7 series)

Application Information

Swing Clamps are ported from below so that all tubing lines run underneath the fixture plate. Clamps are installed in threaded collars, which are bolted to the plate with cap screws. The collars allow simple, economical fixture building and easy height adjustment.

Documents

B1.881

Standard Swing Clamp Data Sheet

Sizes & Clamping Force

Clamping Force with

Pivoting Arm

Clamping Action

Available with clockwise, counterclockwise, or zero° swing

Swing Clamps are pull-type cylinders where part of the total stroke is used to swing the piston, and the remaining stroke is available as the clamping range. Applying fluid pressure swings arm 90° over workpiece then clamps down. Single-acting version has a fast, totally dependable spring return that lifts arm then swings it back 90° for loading/unloading. Optional fluid return (double acting).

Design Considerations

These Swing Clamps incorporate our unique safety-clutch mechanism. If the clamping arm strikes an unexpected object during its swing, the clutch disengages to avoid damaging the object or the clamp's helical-cam mechanism. Do not exceed maximum fluid flow rate in table. For extended clamp life and proper operation of the safety clutch, a simple flow-control valve may be required if the fixture is powered by a high-flow-rate power source and only contains a few clamps. Clamping time should be at least one second.

Mounting & Fluid Supply

Two mounting methods: 1) Mount through a tapped hole in the fixture plate, securing with a lock ring; 2) Mount through a bored hole in the fixture plate, securing with two lock rings. 1/4" BSPP port (two for double-acting clamps) for use with standard fittings. Do not use NPT fittings.

Clamping Arm

Standard Clamping Arm

3000 psi max

Gooseneck Clamping Arm

5000 psi max

Pivoting Clamping Arm

7250 psi max

Order clamping arm separately. Maximum allowable operating pressure depends on the type of arm selected. Choose a Standard Clamping Arm for 3000 psi max, a Gooseneck Clamping Arm for 5000 psi max, or Pivoting Clamping Arm for 7250 psi max (requires a rear support). Longer, custom clamping arms will further reduce allowable operating pressure, inversely proportional to arm length.

Material

Piston > Alloy steel, nitrated for wear and corrosion resistance. Housing > Mild steel, nitrated for wear and corrosion resistance. Piston rod wiper > Viton.

Click here for detailed material and finish specifications.

ROEMHELD Standard Swing Clamps – All Threaded, B1.881 (3, 5, 6, 7 Series)

Single Acting

Order Clamping Arm separately below.

PART NO.	CLAMP SIZE	SWING DIRECTION	MAXIMUM CLAMPING FORCE (lbs)	MAXIMUM CLAMPING FORCE (kN)	OD THREAD	HEIGHT (mm)	CLAMPING STROKE (mm)	TOTAL STROKE (mm)
CLR-1883-304	3 Series	90° cw	1060	4.7	M45x1.5	126.5	11	19
CLR-1883-404	3 Series	90° ccw	1060	4.7	M45x1.5	126.5	11	19
CLR-1883-444	3 Series	zero°	1060	4.7	M45x1.5	126.5	11	19
CLR-1885-304	5 Series	90° cw	2700	12	M60x1.5	147.5	13	22
CLR-1885-404	5 Series	90° ccw	2700	12	M60x1.5	147.5	13	22
CLR-1885-444	5 Series	zero°	2700	12	M60x1.5	147.5	13	22
CLR-1886-304	6 Series	90° cw	4200	18.5	M80x2	172	15	26
CLR-1886-404	6 Series	90° ccw	4200	18.5	M80x2	172	15	26
CLR-1886-444	6 Series	zero°	4200	18.5	M80x2	172	15	26
CLR-1887-304	7 Series	90° cw	7300	32.5	M90x2	183	15	25
CLR-1887-404	7 Series	90° ccw	7300	32.5	M90x2	183	15	25
CLR-1887-444	7 Series	zero°	7300	32.5	M90x2	183	15	25

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Double Acting

Order Clamping Arm separately below.

PART NO.	CLAMP SIZE	SWING DIRECTION	MAXIMUM CLAMPING FORCE (lbs)	MAXIMUM CLAMPING FORCE (kN)	OD THREAD	HEIGHT (mm)	CLAMPING STROKE (mm)	TOTAL STROKE (mm)
CLR-1893-304	3 Series	90° cw	1100	4.9	M45x1.5	126.5	11	19
CLR-1893-404	3 Series	90° ccw	1100	4.9	M45x1.5	126.5	11	19
CLR-1893-444	3 Series	zero°	1100	4.9	M45x1.5	126.5	11	19
CLR-1895-304	5 Series	90° cw	2800	12.5	M60x1.5	147.5	13	22
CLR-1895-404	5 Series	90° ccw	2800	12.5	M60x1.5	147.5	13	22
CLR-1895-444	5 Series	zero°	2800	12.5	M60x1.5	147.5	13	22
CLR-1896-304	6 Series	90° cw	4500	20	M80x2	172	15	26
CLR-1896-404	6 Series	90° ccw	4500	20	M80x2	172	15	26
CLR-1896-444	6 Series	zero°	4500	20	M80x2	172	15	26
CLR-1897-304	7 Series	90° cw	7800	34.5	M90x2	183	15	25
CLR-1897-404	7 Series	90° ccw	7800	34.5	M90x2	183	15	25
CLR-1897-444	7 Series	zero°	7800	34.5	M90x2	183	15	25